From paolo.pani at uniroma1.it  Fri Jun 11 19:40:08 2021
From: paolo.pani at uniroma1.it (Paolo Pani)
Date: Fri, 11 Jun 2021 19:40:08 +0200
Subject: [astroseminar@Sapienza] Gravity theory webinar Mon,
 June 14th @11am: Anuradha Samajdar (U. Milan Bicocca) - "Measuring
 the Neutron Star Equation-of-State: Challenges and Prospects in
 Gravitational-Wave Astronomy
Message-ID: <CADjeKwACTdmzJqck-vviAQePO-p=bW8Wsf3aiNrkseHALqO1VA@mail.gmail.com>

Announcement of the next gravity-theory webinar:

Speaker:* Anuradha Samajdar (U. Milan Bicocca) *
Title: Measuring the Neutron Star Equation-of-State: Challenges and
Prospects in Gravitational-Wave Astronomy
Date:* Monday, June **14th* at *11AM* *CEST* (please note the *unusual*
time).

Abstract:
*The future ground-based gravitational detector era will be much more
sensitive and we expect to extract information from gravitational sources
with much higher accuracies. However, with more sensitive detectors, the
inaccuracies in the waveform models we currently employ will start
dominating. In this talk, I will focus on parameter estimation simulations
of binary neutron star mergers in the advanced design sensitivity detector
era and show that some currently employed waveform models perform badly. In
the second half of this talk, I will focus on a new technique which may be
used to extract a neutron star equation-of-state independent relation from
gravitational wave data directly from special configurations of sources
from the third generation detector era. *

Zoom link:
https://uniroma1.zoom.us/j/81283707469?pwd=SzkyMk5jRm0xcEN3WE5MYVh1RVFtQT09

ID meeting: 812 8370 7469
Passcode: 915450

Have a nice weekend,
Paolo
-- 
Paolo Pani
Associate Professor
ERC StG Fellow, DarkGRA project
Junior Fellow, Scuola Superiore di Studi Avanzati Sapienza

Physics Department (Marconi Building), 3rd floor, room 334
Sapienza University of Rome
Piazzale Aldo Moro 5 - 00185 Rome (Italy)
+39 06 4991 4472 (int 24472)

-- 
________________________________________________________
Le informazioni 
contenute in questo messaggio di posta elettronica sono strettamente 
riservate e indirizzate esclusivamente al destinatario. Si prega di non 
leggere, fare copia, inoltrare a terzi o conservare tale messaggio se non 
si ? il legittimo destinatario dello stesso. Qualora tale messaggio sia 
stato ricevuto per errore, si prega di restituirlo al mittente e di 
cancellarlo permanentemente dal proprio computer.
The information contained 
in this e mail message is strictly confidential and intended for the use of 
the addressee only.? If you are not the intended recipient, please do not 
read, copy, forward or store it on your computer. If you have received the 
message in error, please forward it back to the sender and delete it 
permanently from your computer system.

-- 

Fai crescere i nostri giovani ricercatori
dona il?5?per?mille?alla 
Sapienza
*codice?fiscale?80209930587*

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From raffaella.schneider at roma1.infn.it  Tue Jun 15 13:03:11 2021
From: raffaella.schneider at roma1.infn.it (raffaella.schneider at roma1.infn.it)
Date: Tue, 15 Jun 2021 13:03:11 +0200
Subject: [astroseminar@Sapienza] next QUID ULTRA colloquium by Piero Madau,
	June 22 2021 at 16:30
Message-ID: <7DE6D9F0-20D9-4A0A-8A7A-6ED2AB47C97F@roma1.infn.it>

Dear Colleagues,

we are pleased to announce that the seventh colloquium of the program QUID ULTRA? Frontiers and Controversies in Astrophysics, 
will be on June 22 2021 at 16:30 by Piero Madau (University of California, Santa Cruz).  Title and abstract
are attached below. 

The program QUID ULTRA? Frontiers and Controversies in Astrophysics is a series of monthly prestigious colloquia that will be 
running from early February till December 2021. This initiative has been funded by Sapienza University with the co-sponsorship of 
INAF/Astronomical Observatory of Rome and of the joint PhD program in Astronomy, Astrophysics and Space Science of Sapienza, 
Tor Vergata University and INAF.

Looking forward to seeing you soon, 

Raffaella Schneider (on behalf of the SOC)

????????????????
June 22 2021 at 16:30

Piero Madau (University of California, Santa Cruz)

Title: The dark and luminous side of structure formation

Abstract: 
The beaded filamentary network of intergalactic gas in which galaxies form and evolve,  and which gives origin to a ?forest?  of hydrogen Lyman-alpha absorption lines in the 
spectra of distant quasars, encodes information on the physics of structure formation, the nature of the dark matter,  the temperature and ionization state of baryons in the 
Universe. The potential of the Lyman-alpha forest for constraining with percent accuracy the matter density distribution on medium to small cosmological scales has motivated 
the construction of the Dark Energy Spectroscopic Instrument (DESI), which will measure absorption line spectra backlit by nearly a million high-redshift (z >2) quasars. 
In this talk I will describe the multiple steps needed to connect flux fluctuations in quasar spectra to physical parameters, present an unprecedented suite of  hundreds of  
high-resolution hydrodynamical simulations of structure formation with different  thermal histories, and use it to perform a statistical comparison of mock spectra with the 
observed 1D flux power spectrum and other data. A likelihood analysis shows that, over the last 13 billion years,  gas in the cosmic web experienced four main heating and 
cooling epochs.


Join Zoom Meeting
https://uniroma1.zoom.us/j/83598894783?pwd=NTBKeTZ2cU4vRW5xdVc4NDNpVDlidz09 <https://uniroma1.zoom.us/j/83598894783?pwd=NTBKeTZ2cU4vRW5xdVc4NDNpVDlidz09>

Meeting ID: 835 9889 4783
Passcode: 358787
????????????????










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From paolo.pani at uniroma1.it  Mon Jun 21 08:46:47 2021
From: paolo.pani at uniroma1.it (Paolo Pani)
Date: Mon, 21 Jun 2021 08:46:47 +0200
Subject: [astroseminar@Sapienza] Gravity theory webinar Wed,
 June 23rd @ 3pm - Tim Dietrich (Potsdam U. & AEI) - "A nuclear
 physics - multi-messenger astronomy analysis of binary neutron star
 mergers"
Message-ID: <CADjeKwCGpTn7Wq6exnupAfD3pmHz4RmVdG=3RgeBbpapZxkC6w@mail.gmail.com>

Announcement of the next gravity-theory webinar:

Speaker: *Tim Dietrich (Potsdam U. & Max Planck Institute, AEI)*
Title: *A nuclear physics - multi-messenger astronomy analysis of binary
neutron star mergers*
Date:* Wednesday, June 23rd @ 3pm*

Abstract:
*We discuss how we can use numerical-relativity simulations to derive
gravitational-wave and electromagnetic models describing the binary neutron
star coalescence. We show how these models can be used within a
multi-messenger framework to derive new constraints on the neutron-star
equation of state and the Hubble constant. For this purpose, we analyze the
gravitational wave signal GW170817 and its electromagnetic counterparts
AT2017gfo and GRB170817A, together with X-ray observations by NICER, radio
observations of massive pulsars, and nuclear theory computations.
Similarly, we also discuss that a non-detection of a kilonova for the
second binary neutron-star merger detection GW190425 placed constraints on
the properties of the system.*


Zoom link:
https://uniroma1.zoom.us/j/81283707469?pwd=SzkyMk5jRm0xcEN3WE5MYVh1RVFtQT09
ID meeting: 812 8370 7469
Passcode: 915450

Cheers,
Paolo

-- 
Paolo Pani
Associate Professor
ERC StG Fellow, DarkGRA project
Junior Fellow, Scuola Superiore di Studi Avanzati Sapienza

Physics Department (Marconi Building), 3rd floor, room 334
Sapienza University of Rome
Piazzale Aldo Moro 5 - 00185 Rome (Italy)
+39 06 4991 4472 (int 24472)

-- 
________________________________________________________
Le informazioni 
contenute in questo messaggio di posta elettronica sono strettamente 
riservate e indirizzate esclusivamente al destinatario. Si prega di non 
leggere, fare copia, inoltrare a terzi o conservare tale messaggio se non 
si ? il legittimo destinatario dello stesso. Qualora tale messaggio sia 
stato ricevuto per errore, si prega di restituirlo al mittente e di 
cancellarlo permanentemente dal proprio computer.
The information contained 
in this e mail message is strictly confidential and intended for the use of 
the addressee only.? If you are not the intended recipient, please do not 
read, copy, forward or store it on your computer. If you have received the 
message in error, please forward it back to the sender and delete it 
permanently from your computer system.

-- 

Fai crescere i nostri giovani ricercatori
dona il?5?per?mille?alla 
Sapienza
*codice?fiscale?80209930587*

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From raffaella.schneider at roma1.infn.it  Tue Jun 22 11:35:38 2021
From: raffaella.schneider at roma1.infn.it (raffaella.schneider at roma1.infn.it)
Date: Tue, 22 Jun 2021 11:35:38 +0200
Subject: [astroseminar@Sapienza] gentle reminder: next Quid Ultra colloquium
 by Piero Madau, today at 16:30
Message-ID: <53FD6698-352C-4681-B6DC-79311602A800@roma1.infn.it>

Dear Colleagues,

this is to gently remind you that the next online colloquium of the series: 

Quid Ultra? Frontiers and Controversies in Astrophysics 

will be today at 16:30. You can find all the details below and the updated program 
for future colloquia at the link:  https://www.quidultra.it <https://www.quidultra.it/>

Looking forward to seeing you soon, 

Raffaella Schneider (on behalf of the SOC)
  
Prof. Raffaella Schneider
Dipartimento di Fisica "G. Marconi?
Senior Fellow, Scuola Superiore di Studi Avanzati Sapienza
Sapienza, Universit? di Roma
P.le A. Moro 2, 00185 Roma, Italy
raffaella.schneider at roma1.infn.it <mailto:raffaella.schneider at roma1.infn.it>


????????????????
June 22 2021 at 16:30

Piero Madau (University of California, Santa Cruz)

Title: The dark and luminous side of structure formation

Abstract: 
The beaded filamentary network of intergalactic gas in which galaxies form and evolve,  and which gives origin to a ?forest?  of hydrogen Lyman-alpha absorption lines in the 
spectra of distant quasars, encodes information on the physics of structure formation, the nature of the dark matter,  the temperature and ionization state of baryons in the 
Universe. The potential of the Lyman-alpha forest for constraining with percent accuracy the matter density distribution on medium to small cosmological scales has motivated 
the construction of the Dark Energy Spectroscopic Instrument (DESI), which will measure absorption line spectra backlit by nearly a million high-redshift (z >2) quasars. 
In this talk I will describe the multiple steps needed to connect flux fluctuations in quasar spectra to physical parameters, present an unprecedented suite of  hundreds of  
high-resolution hydrodynamical simulations of structure formation with different  thermal histories, and use it to perform a statistical comparison of mock spectra with the 
observed 1D flux power spectrum and other data. A likelihood analysis shows that, over the last 13 billion years,  gas in the cosmic web experienced four main heating and 
cooling epochs.

Join Zoom Meeting
https://uniroma1.zoom.us/j/83598894783?pwd=NTBKeTZ2cU4vRW5xdVc4NDNpVDlidz09 <https://uniroma1.zoom.us/j/83598894783?pwd=NTBKeTZ2cU4vRW5xdVc4NDNpVDlidz09>

Meeting ID: 835 9889 4783
Passcode: 358787
????????????????









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